Hinge construction



F. ELLMER ET, AL

HINGE CONSTRUCTION 3 Sheets-Sheet 1 Filed Jan. 15. 1923 J auli'i llm C/Ea/rles 52%cff March 4 1924.

A II A r V m: a Q" I Al ill March 4 1924.

1,485,556 P. F. ELLMER ET AL HINGE CONSTRUCTION Filed Jan. 15 1925 5 Sheets-Sheet 2 gwuz'n toz mer Paullill' W11 #maaea Mar'ch4, 1924.:

v 1,485,556 P. F. ELLMER ET AL HINGE CONSTRUTION Filed Jan. 15. 1925 3 Sheets-Sheet 5 gwumx fol 6 Paul llllirocr C'fia/z'les Sfrsff Patented Mar. 4, 1924.

vireo s'r'rss PATNT HINGE. CONSTRUCTION.

Application filed January 15, 1923. Serial No. 812,670.

To all whom it may concern: Be it known that we, PAUL F. ELLltIER and CHARLES STREFF, citizens of the United States, residing at Philadel hia, county of Philadelphia, and State 0 Pennsylvania, have invented certain new and useful Improvements in Hinge Constructions, of which the followin 1s a specification.

Our invention re ates to hinge construction for use in connection with cellar doors, hatches, trap doors and the like and has for its object to provide a hinge construction.

which may be sup orted by the wall of the opening and in suc manner that the hinges will be within the opening or hatchway when the door or hatch is closed so that there will be no projecting parts on the outside.

This object, and other advantageous ends which will be described hereinafter, we attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a plan view of cellar doors and a support having our invention applied thereto,

- Figure 2 a section on line 22 of Figure 1, Figure 3 a section on line 33 of Figure 2, Figures 4, 5 and 6 are detail perspective views of certain parts of our invention,

Figure 7 a view similar to Figure 2 illustrating the door in an open posltion, and

Figure 8 a front view of Figure 7 looking in the direction of the arrow :22.

The description of the hinge construction will be as it is applied to a cellar door and the word door will be the generic term used for trap doors, hatches and the like.

Referring to the drawings, a support 1 made of angle iron has one of its legs forming a wall 2 of the cellar opening and the other leg forming a cellar door support 3. A bracket 4 is secured to wall 2 and has an arm 5 pivoted thereto at 6. A bell crank lever is pivoted to arm 5 at 8 and has one end 9 pivotally connected with bracket 4 by a link 10 and the other end 11 pivoted to a bracket 12 secured to a cellar door 13. The end of arm 5 is pivotally connected with a bracket 13, on the cellar door, by a link 14. We preferably provide a slot in the end of arm 5 through which a pivot bolt 15 passes to permit bracket 13 to be secured to the cellar doorwithout any great degree of accuracy.

When raising the door, link 10, which is plvoted to bracket 4, moves bell crank lever 7 which will move the door relatively to arm 5. This movement is permitted by the pivotal connection between arm 5 and brac ets 11 and 13 on the door. When the door is closed it will rest on cellar door support 3, the hinge construction being within the cellar opening, thus leaving no projeoting parts on the outside of the door and attamlng a oint which is very desirable when the cel ar door is used on sidewalks. By constructing a hinge in this manner, a-maximum cellar opening is obtained since the hinge can be readily secured to the sidewall of the cellar opening.

While we have described our invention as taking a particular form, it will be understood that the various arts of our invention may be changed wit out depart ing from the spirit thereof, and hence we do not llmit ourselves to the precise construction set forth, but consider that we are at liberty to make such changes and alterations as fairly come within the scope of the ap ended claims.

aving thus described our invention, what we claim as new and desire to secure by Letters Patent is 1. In combination with a door and a support; an arm hinged to the support and pivotally connected with the door by a link and a lever, and a link pivotally connecting the lever with the support.

2. In combination with a door and a support; an arm hinged to the sup ort and pivotally connected with the door y a link and a bell crank lever, and means pivotally connecting the bell crank lever with the support.

3. Incombination with a door and a support; an arm hinged to the sup ort and pivotally connected with the door y a link and a bell crank lever, and a link pivotally connecting the bell crank lever with the support.

4. In combination with a door and a support; a bracket on the support; an arm hinged to the bracket and pivotally connected with the door by a link and a bell crank lever, and a linkivotally connecting the bell crank lever with the bracket on the support.

5. In combination with a door and a support having a wall surrounding an opening;

a bracket secured to the wall; an arm hin ed to the bracket and pivotally connected with the door b a link and a bell crank lever, and a li pivotally connecting the bell crank lever with the bracket.

6. In combination with a door and a support; a bracket on the support; brackets on the door; an arm hin%ed to the bracket on the support and pivota ly connected with 10 the brackets on the door by a link and a bell crank lever, and a link pivotally conmeeting the bell crank lever with the brackat on the support.

In testimony whereof we have signed our names to this specification in the presence of 15 two subscribing witnesses.

Witnesses 

